Description

The E27 Ohm (0.27E) 1/2W 5% Through Hole Resistor is a commonly used, general-purpose resistor in electronic circuits. It has a resistance value of 0.27 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance. This type of resistor is designed for through-hole mounting, which makes it suitable for a wide range of applications, from simple electronic devices to prototyping projects.

Key Specifications:

• Resistance: 0.27 ohms (0.27E)
  The low resistance value is used in applications requiring minimal voltage drop, such as current sensing or power distribution systems.

• Power Rating: 1/2 watt (0.5W)
  The resistor can safely dissipate up to 0.5 watts of electrical power without being damaged. This makes it ideal for low-power circuits.

• Tolerance: ±5%
  The resistance value can vary by up to 5% from the nominal value. In this case, the actual resistance could range between 0.2565 ohms and 0.2835 ohms.

• Mounting Type: Through-hole
  The resistor has two metal leads that pass through holes in a printed circuit board (PCB), making it easy to solder for more durable connections, especially in prototyping and assembly processes.

Applications:

• Current Sensing: Due to its low resistance value, this resistor is often used in circuits that measure or monitor current, as the voltage drop across it can be measured to determine the current.

• Power Regulation: It is suitable for power supply circuits where regulating the flow of electricity with minimal resistance is important.

• Voltage Drop Minimization: Ideal for applications that require maintaining efficient current flow with minimal voltage loss, such as in power-efficient designs or battery-powered systems.

• General-Purpose Use: The 1/2 watt power rating and 5% tolerance make it a versatile component for general-purpose use in a variety of electronic circuits.

Physical Characteristics:

• Size: Typically, a 1/2 watt resistor will have a length of about 1/4 inch (6.35 mm) and a diameter of 1/8 inch (3.18 mm), depending on the specific design.

• Construction: The resistor is cylindrical in shape, with leads extending from both ends for insertion into a PCB, where it is soldered to make an electrical connection.

Summary:
The E27 Ohm (0.27E) 1/2W 5% Through Hole Resistor is a reliable, general-purpose resistor suited for applications involving low-power, low-resistance requirements. Its 1/2 watt power rating and 5% tolerance make it suitable for non-precision applications. The through-hole mounting style ensures robust connections, making it ideal for prototyping, power regulation, current sensing, and voltage drop minimization.